I have no problems with SSS and IDL. This rendered in under 10 minutes on my i5 Laptop. (Had to reduce pic quality by half to attach it to this post)

And yes, what Bagginsbill said: Keep "light emitter" checked for everything, including the skin.

Not sure what you're doing wrong.

I mean, running a texture through EZSkin , ticking IDL and adding a single infinite light to your scene can't be that complicated, can it ?